{"title":"Developing large language models for display industrial knowledge: Data augmentation, training techniques, and evaluation strategies","authors":"Bingqian Wang, Lixin Wang, Qingqing Sun, Yulan Hu, Yuyu Liu, Xingqun Jiang","doi":"10.1002/jsid.2064","DOIUrl":"10.1002/jsid.2064","url":null,"abstract":"<p>Large Language Models (LLMs) can be applied to many fields in the display industry. However, general LLMs lack domain-specific knowledge and specialized terminology understanding, which results in inaccurate responses when applied to industrial question-answering(Q&A) scenarios. To address this issue, this work introduces a framework of Large Language Model training to effectively import the Display Industry Knowledge. This framework is specifically designed to enhance the comprehension ability of LLMs on the knowledge from the display industry field by improving specialized data governance, knowledge distillation techniques, data augmentation strategies, and continual pre-training mechanisms. This approach not only significantly improves the model's performance in Q&A applications within the display industry but also prevents catastrophic forgetting of common knowledge. Experimental results demonstrate the effectiveness of these techniques. We hope that this work can be also helpful for the customization of LLMs in other specialized domains.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"380-389"},"PeriodicalIF":2.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Color-tunable powder electroluminescent device controlled by applied frequency","authors":"Shinichiro Abe, Kaito Toda, Takahisa Ueno, Toshifumi Satoh, Shota Tsuneyasu","doi":"10.1002/jsid.2050","DOIUrl":"10.1002/jsid.2050","url":null,"abstract":"<p>We fabricated light-emitting layers consisting of an inorganic phosphor and multicolored fluorescent dyes and successfully controlled the emission color of a powder electroluminescent device, ranging from reddish light-blue to purple, by inducing multistage energy transfer between them and controlling the transfer through the applied frequency.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"353-359"},"PeriodicalIF":2.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A 1.33 μV/e− voltage mode active pixel sensor with threshold voltage compensation for dynamic X-ray imaging","authors":"Jiangbo Hu, Yuhan Zhang, Congwei Liao, Shengdong Zhang","doi":"10.1002/jsid.2053","DOIUrl":"10.1002/jsid.2053","url":null,"abstract":"<p>This paper proposes a high-gain voltage-mode active pixel sensor (V-APS) for high-frame-rate dynamic X-ray imaging. Due to a source–follower structure, the proposed active pixel circuit exhibits superior linearity compared with current-mode APS. And a shared programmable-gain amplifier (PGA) is employed to provide secondary-stage amplification, mitigating the gain limitation of the source–follower structure. The charge-to-voltage gain of the proposed V-APS achieves 1.33 μV/e<sup>−</sup> with a nonlinearity of 0.38%. Furthermore, threshold voltage (<i>V</i><sub>T</sub>) variation and shift of amplifying transistors in pixels and PGAs can be compensated by using dual-gate thin-film transistor technology. In comparison with conventional 3-T V-APS, the proposed one features a significant decrease of output voltage error rate from 43.67% to 0.79% at a <i>V</i><sub>T</sub> shift of ±0.5 V.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"371-379"},"PeriodicalIF":2.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ingo Rotscholl, Kilian Kirchhoff, Alexander Voelz, Udo Krüger
{"title":"Measuring and characterizing the diffractive component in display reflection","authors":"Ingo Rotscholl, Kilian Kirchhoff, Alexander Voelz, Udo Krüger","doi":"10.1002/jsid.2060","DOIUrl":"10.1002/jsid.2060","url":null,"abstract":"<p>We present and validate an easy-to-setup approach to measure the reflection properties of displays. It is based on a wide field of view conoscopic lens in conjunction with an orientation detection algorithm. Using this approach, we can measure not only the specular, haze, and Lambertian components of display reflection but also the diffractive component. We then investigate the fundamental dependencies of this fourth reflection component through a series of measurements using a variable aperture source and an LC and OLED display. Through these experiments, we can show that the diffractive component scales linearly with the light source's luminance and depends on the angular subtense of the light source.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"324-334"},"PeriodicalIF":2.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"5009-ppi, 10000-cd/m2, OLED/OS/Si structure display with built-in CPU and display driver","authors":"Yuki Tamatsukuri, Akitsugu Miyairi, Shoki Miyata, Minato Ito, Toshihiko Saito, Masashi Fujita, Munehiro Kozuma, Hidetomo Kobayashi, Yuto Yakubo, Tsutomu Murakawa, Yuichi Yanagisawa, Masahiro Katayama, Toshihiko Takeuchi, Yutaka Okazaki, Yasumasa Yamane, Takaaki Nagata, Daiki Nakamura, Toshiyuki Isa, Shunpei Yamazaki","doi":"10.1002/jsid.2058","DOIUrl":"10.1002/jsid.2058","url":null,"abstract":"<p>This study developed an organic light-emitting diode display featuring c-axis-aligned crystalline oxide semiconductor (CAAC-OS) field-effect transistors (FETs) monolithically stacked over silicon (Si) FETs. This display achieved a definition of 5,009 ppi and a luminance of 10,000 cd/m<sup>2</sup>. Below the display pixels incorporating CAAC-OS FETs, both source and scan drivers and a central processing unit (CPU; Cortex-M0) were integrated using Si FETs without widening the bezel. The findings indicate that the built-in CPU enables amplifier offset compensation, which is necessary for image quality correction, and that functional circuits beyond the display driver can operate on a Si substrate.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"314-323"},"PeriodicalIF":2.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Early detection of crack vulnerability in foldable displays through critical angle curvature analysis","authors":"Kyongtae Park, Jaewoong Kim, Dongso Kim","doi":"10.1002/jsid.2065","DOIUrl":"10.1002/jsid.2065","url":null,"abstract":"<p>Foldable displays have become integral to consumer electronics, yet they remain susceptible to mechanical failures, particularly cracks in the hinge region caused by repeated mechanical stress. This study introduces an artificial intelligence (AI)-based method to predict and prevent crack formation by analyzing hinge surface curvature measurements captured within 0.2 seconds of unfolding to 160°, at critical vulnerable angles, using Principal Component Analysis (PCA) and uncertainty quantification with k-Nearest Neighbors (k-NN). A mathematical model incorporating exponential distance-based weighting quantified classification uncertainties, distinguishing confidently classified samples from uncertain cases. Furthermore, an AI-driven scoring model was validated through leave-one-out cross-validation (LOOCV) on an expanded dataset of 200 samples. This model successfully translates complex curvature data into numerical scores, achieving an F1 score of 0.9692 under conditions ensuring zero false positives, thus preventing defective products from reaching customers. This approach significantly enhances quality control in foldable display manufacturing.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"344-352"},"PeriodicalIF":2.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-efficiency continuous multiple-quantum-well red AlGaInP μLED with reduced crosstalk for AR light engines","authors":"Yizhou Qian, Seok-Lyul Lee, Shin-Tson Wu","doi":"10.1002/jsid.2063","DOIUrl":"10.1002/jsid.2063","url":null,"abstract":"<p>We develop both electrical and optical models to optimize the light efficiency and minimize the crosstalk of continuous multiple-quantum-well (CMQW) red AlGaInP μLED with a 2.4-μm pixel size for augmented reality (AR) applications. Our simulation results agree with the reported experimental data well. We also analyze the physical mechanisms and propose two methods to improve light extraction efficiency (LEE). By redirecting the reflected wave and implementing meta-atoms in the device structure, the LEE of CMQW red AlGaInP μLED is improved by ~30% while suppressing the crosstalk between adjacent pixels. In addition, by implementing a carbon black matrix, the crosstalk is reduced by ~5x while keeping a relatively high efficiency. As a result, the image blur is alleviated, and image quality is significantly improved. These high-efficiency red μLEDs will help reduce the power consumption of emerging full-color AR glasses.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"335-343"},"PeriodicalIF":2.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kumar Mallem, Maksym F. Prodanov, Zebing Liao, Meiqi Sun, Jianxin Song, Debjyoti Bhadra, Abhishek K. Srivastava
{"title":"Highly efficient and bright green quantum-rod light-emitting diodes with eliminated charge leakage","authors":"Kumar Mallem, Maksym F. Prodanov, Zebing Liao, Meiqi Sun, Jianxin Song, Debjyoti Bhadra, Abhishek K. Srivastava","doi":"10.1002/jsid.2054","DOIUrl":"10.1002/jsid.2054","url":null,"abstract":"<p>The external quantum efficiency (EQE) of QLEDs reaches a theoretical limit of about 25%, primarily constrained by light outcoupling efficiency (<i>ƞ</i><sub><i>out</i></sub>). In contrast, quantum rods (QRs) provide directional light emissions that can exceed the <i>ƞ</i><sub><i>out</i></sub> limitations of spherical QDs, potentially double the EQE of LEDs. However, developing high-efficiency QRLEDs faces several challenges, such as low quantum yield of the QRs and charge imbalance in the device. Recent advancements in QRLEDs have achieved an EQE of 22%, and the study focuses on red QRs only. Expanding QRLEDs for full-color displays is essential for producing highly efficient green QRs. In this work, we synthesized highly efficient green CdSe/Cd<sub>x</sub>Zn<sub>1-x</sub>S QRs at an emission wavelength of 518 nm, achieving a quantum yield of over 95%. We identified two pathways of electron leakage in QRLEDs at the organic/inorganic interface, ultimately limiting the device's efficiency. We improved the device efficiency by mitigating electron leakage and enhancing hole injection in QRLEDs using multi-stacked HTLs. As a result, QRLEDs achieved record-breaking performance metrics: an EQE of 19.4%, a current efficiency of 72 cd/A, and a luminance of 320,000 cd/m<sup>2</sup>.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 5","pages":"302-313"},"PeriodicalIF":2.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhanced micro-LED light efficiency by optical structures on substrate","authors":"Yang-En Wu, Jia-Hao Hsu, Kuan-Hsun Chen, Kun-Cheng Tien, Li-Yin Chen, Hao-Chung Kuo","doi":"10.1002/jsid.2038","DOIUrl":"10.1002/jsid.2038","url":null,"abstract":"<p>Micro-LED displays are widely acknowledged as upcoming display innovations. However, the reduced size of micro-LED devices may compromise their light extraction efficiency. Additionally, the encapsulation structure required for the finished product of micro-LED displays leads to about a 40% loss in light intensity compared to only LED chips without encapsulation. This paper extends the EQE equation and implements a LEE secondary optics factor (the secondary optics of light extraction efficiency). We consider four different optical effects on micro-LED displays, including refraction, reflection, black matrix, and focusing. The main purpose of this paper is to study how to enhance the display-level light extraction and LEE secondary optics parameters under different conditions. We conduct optical simulations for three different LED sizes and various structures, including glue, black matrix, white glue, and microlens array. Comparing the simulation results with real experiment results, our findings show that a combination of black and white glue structures resulted in a 20% enhancement in efficiency compared to using black glue alone. Furthermore, the microlens structure led to a significant 45% enhancement in normal angle intensity compared to the protective glue structure.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 7","pages":"842-851"},"PeriodicalIF":2.2,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiafu Lin, Yujing Fu, Yuang Chen, Jiangen Wu, Huan Deng
{"title":"Gaze-matching eyebox expansion in retinal projection augmented reality display","authors":"Jiafu Lin, Yujing Fu, Yuang Chen, Jiangen Wu, Huan Deng","doi":"10.1002/jsid.2047","DOIUrl":"10.1002/jsid.2047","url":null,"abstract":"<p>Eyebox expansion of retinal projection-based augmented reality display may lead to image deviation from the fovea of the human eye. Hence, this paper proposes an eyebox-extended retinal projection display (RPD) with gaze-matching for augmented reality. The system's exit pupil is a composite image combiner composed of three holographic optical elements (HOEs). Each HOE is positioned at a specific location on the waveguide, allowing the diffracted beams to be imaged on the fovea of the human eye. Gaze-matching is achieved. In the experiment, the RPD systems of the traditional structure and proposed structure were both established in Zemax software for simulation. A detector was added at the retinal position for the comparison of the light distribution when viewing from different viewpoints. Optical experiments were also conducted to record the distribution of light on the receiving screen and observe the display performance of the proposed system. Both simulation and optical experiments show that the proposed system has the ability to project virtual images onto the fovea of the human eye to achieve gaze-matching.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 7","pages":"833-841"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144673039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}